Road machine



JuHy 4, i933.

Filed March 28, 1952 J. B. JARMIN ROAD MACHINE 9 Sheets-Sheetl l nmmdn Jamel Jar/nm .Juy 4, 1933., J. B, JARMIN I 1,916,222

ROAD MACHINE Filed March 28, 1952 9 Sheets-Sheet 2 wue/wto'o Jamcv E ./arm /A J. B. JARMIN ROAD MACHINE July 4, 1933!.

Filed March 28, 1932 9 Sheets-Sheet 3 J. B. JARMIN `Iuly 4, 1933.

ROAD MACHINE Filed March 28, 1932 9 Sheets-Sheet 4 J. B. JARMIN Juy 4, 1933.

ROAD MACHINE Filed March 28, 1932 9 Sheets-Sheet 5 July 4, 1933.

J. B. JARMIN ROAD MACHINE Filed March 28, 1932 9 Sheets-Sheet 6 J. B. JARMIN ROAD MACHINE Filed March 28, 1932 9 Sheets-Sheet '7 J. B. .JARMIN ROAD MACHINE Julyl 4;, i933.,

Filed March 28, 1952 9 Sheets-Sheet 8 J. B. JARMIN ROAD MACHINE .lilly 4, 1933.

Filed March 28, 1932 9 Sheets-Sheet 9 MMI Patented July 1933 UNITED STATES PATENT oFFicl:

JAMES JARMIN, OF DALLAS, TEXAS, ASSIGNOR T0 SERVIS EQUIPMENT COMPANY, 0F

i DALLAS, TEXAS, A CORPORATION 0F TEXAS I EDAD MACHINE Application led March 28, 193,2. Serial ,No. 601,532.

This invention relates to new and. useful improvements in road machines. y

One object of the invention is `to provide a road machine of the type shown in my Let-A ',ters Patent No. 1,812,342 issued June 30,

1931, and involving certain improvements makingfor increased eiiicienc ease of operation, reduction in costy o maintenance, longevity of the machine, and more stability. Another object of the invention is to sim-` plify the various adjustments, thustending to reduce the number of parts, as well as to effect a saving in the cost of manufacture.

Still another object of the invention is to provide housings for certain ofthe gearings and to locate such gearings at the rear end of the machine, whereby improved vision is obtained and a better structure. provided.

An important object of the invention resides in -an improved elbow and rearaxle mechanism, whereby the machine is more efficiently braced against twisting strains and f working adjustments are more easily performed.

A further object of the invention is to utilize the central reach or connecting member as a housing for the long adjusting shaft for the front wheels, thus getting said shaft out of the way and improving the appearance of the machine.

A construction designed to carry out the invention will be hereinafter describedtogether with other features of the invention.

The invention will be more readlly -understood from a reading of the followlng specification and by reference to the accom panying drawings, in which an example of the invention is shown, and wherein:

Figure 1 is a side elevation of a road machine constructed in accordance with the invention, v

Figure 2 is a plan view of the same, y Figureis a front elevation ofthe machine, Figure 4 is a rear elevation ofthe machine,

Figure 5 is `an.enlarged transverse vertical sectional view showing a portion of the machine and taken on the line 5-5 of Figure 1, looking in the direction of the arrows,y

Figure 6 is an enlarged v1ew of the rear 'portion of the machine, partly in section and partly in elevation,

Figure 7 is a detail of the hangercframe adjusting means, p K

Figure 8 is a sectional detail of the front wheel adjusting means,

' Figure 9 is a vertical sectional view taken on the line 9 9 of Figure 2,

Figure 1 0 is a detail of the shifting means, Figure 11 is a horizontal cross-sectional viewtaken on thel line 11-11 of Figure 1,

Figure 1,2 is an enlarged longitudinal sectional view of the ring locking means and taken on the line 12-12 of Figure 11,

, Figure 13 is an elevation of the rear half of another form of road machine constructed in accordance with the invention,

Figure 14 is a plan View of the same, and

Figure l5 is a transverse vertical sectional view taken on the .line 15-15 of Figure 13.

In the drawings, the numeral 10 designates a main connecting member or reach 10 which connects the front and rearq axles and constitutes the backbone of the machine. It is preferable to use for this reach a length of pipe of comparatively large diameter, but any structure suitable for the purpose may be used.

The reach 10 is provided with an annular flange 11 at its rear end, which is bolted to the flan e 12 of an-elbow 13. The elbow has a base (igange 14 (Fig. 6) which issecured by bolts l5 to an arched support or bridge 16,

(Fig. 5). This bridge carries longitudinal `saddles 17 (Fig. 6 which rest on the forward ends of stub sha ts 18 and are rigidly held thereto by clamps 19. 1 The bridge has a forward extension 16 bolted to an upright` channel bar 20, the upper end of which is secured by bolts 21 (Fig. 6) to a skirt 22 the reach 10. The upright, channel bar and 'the bridge with its extension', constitute a connected to the spindles 25 of rear ground 10G wheels 25. The rear angle bar carries a `9o depending from the angevll at the rear of u y gear rack 26, which is engaged by a pinion 27 mounted on a shaft 28 (Figs. 4 and 6).

yThe other end of this shaft carries a housed vaxle by the keepers 34 and clamps 35 and .said axle is slidable transversely of the shafts.

An operators platform 37 fastened on the rear side of ,the elbow 13 is supported by legs 36. When the hand wheel 33 is turned the entire rear axle is slid Vbetween the keepers 34 and an le bar 35, and shifted to either side of the sY afts 18.

For tilting the ground wheels 25, a bridle bar 38 is pivotally connected to arms 39 rigid -with 'and extending upwardly from the spindles 25 of the ground wheels 25. The bar 38 carries a gear segment 40 (Fig. 4) which meshes with a pinion 41 ymounted on a shaft 42 having a worm gear 43 at its other end. The gear 43` is housed and engaged by a worm 44. This worm is operated, through the medium of a universal 45 connected to a rod 46. The upper end of the rod has connection through a universal 47 (Fig. 1) with a bevel gear 48 which is engaged by another l bevel gear 49 operated by a crank handle 50. As the crank is turned the gear segment is swung and the angle bar 38 is shifted, whereby the ground wheels are tilted due to the bars connection with the spindles 25 of the ground wheels.

, At the forward end, the reach pipe 10 is carried by a `post 51 (Figs. 1, 3 and 9) having a'saddle 52"at its upper end. A cap 53 is secured tothe saddle by bolts 54, and the forward end of the pipe is rigidly secured in the saddle by the cap.

A front axle consists of twot angle bars 55 n and 56 pivotally connected to spindles 57 and supported in ground wheels 57 An arched member 58 is securely fastened -to the angle bars 55 and 56. The post 51 has a roun ed bottom 59 which rests on aturntable 59 on the member 58. A pivotal connection is obtained between the post and the turnatable by means of a vertical shaft 60 which extends. from'within the pi e downwardly through the post and mem er 58. This shaft has connection, by means of a universal joint 61, with a worm 62. The worm engages a worm gear 63 mounted on a shaft 64. A pinion 65, on the other end'of the shaft. 64, engages a gear segment 66 carried by a bridle i bari67 which is pivotally connected at its ends I' to arms 68 extending u wardly from the spindles 57 of the groun wheels.

The upper end of the shaft 60 carries a bevel gear 69. The gear 69 meshes with another bevel gear 70 fastenedI on a control shaft 71 supported by a bracket 72 within the pipe 10 (Fig. 9). The control shaft 71 extends rearwardly within the pipe and has its rear end projecting from the rear of the elbow 1 3, and provided with a crank handle 73. The shaft 71 is thus housed within the pi e and kept out of the way.

en the crank 73 is turned, the shaft 71 rotates the shaft 60 which drives the worm 62 to turn the gear 63 and pinion 65. This swings the gear segment 66 to shift the bridle bar 67 thereby tilting the front ground wheels 57.

A clevis plate 74 is loosely mounted on a bearing 74 within the post 51 and has its rear end rigidly fastened to the front end of a longitudinal hanger frame 75, which underlies the reach 10. This frame, by reason of the pivotal mounting of said plate, may bc raised or lowered at its rear end, o'r swung in a transverse arc on its longitudinal axis. The frame is composed of two side angle members 76 (Fig. 2) which extend rearwardly from the plate 74 and diverge from each other. The rear ends of the frame members are connected by a cross angle bar 77.

In order to support the rear end 'of the'.

hanger frame, hangers 78 (Figs. 1, 5 and 7) are suspended by means of universal joints 79 from arms 80 clampedy on the forward ends of shafts 81. Each hanger has its lower end connected through a universal 82 to the rear end of a respective member 76 of the hanger frame.

The shafts 81 'extend longitudinally on each side of the reach 10 and are journaledY at their forward ends in brackets 83 diverging from a collar 84 rigidly secured on the reach pipe 10. A gear 85 is fastened on the rear end of each shaft 81 (Fig. 6) and this gear is engaged by a worm 86 secured on a shaft 87. Each gear 85 and worm 86 are mounted in a housing 85 and these housings are fastened to each side of the upper end of the elbow 13. These housings support the rear ends of the shafts 81.

Each shaft 87 carries a hand wheel 88 at its outerend. It is seen that when the wheels springs are connected to the ends of a. cable 93 which passes over a pulley 94 journaled in a bracket 95 secured to,the reach 10. By

means of the cable 93 the springs are equal# ized wheneither arm 80 is swung.

The springs are constantly undertension and when the arms 80 are swung to lower the member 109'.

by hangers 118' depending from the cross The shaft 118 has connection, by means of a universal 119 with a rod 120.

The rod 120 is connected, through a unihangers 78, the springs are further tensioned, versal 121, with a rearwardlvextending adand thus when the operation is reversed to raise the hangers, the springsy assist in elevating the load. On the front side of the upright channel verse channel bar 96 (Fig. 6). Forwardly extending brackets 97 (Fig. 11) are secured to the ends of the bar 96 and support ,an elongated ,worm screwy 98.A The bar 961s stiff- Aened by braces 96'. The worm screw carries a bevel gear 99 at one end. Thisegear is engaged by another bevel gear 100, which has connection through the medium of a universal joint 101 with a vertical shaft 102 (Fig. 10).

The shaft 102 is supported nearits upper end by a bracket 103, at its upper end. l

A traveling nut or collar 105 is threaded on the worm screw 98 and is securely fastenedto a telescoping shaft 105'. rIhe shaft 105' is suspended from a carriage 106 by loops 106'. The carriage has its forward end pivotallyconnected to the rear end of the hanger frame. When the crank 104 is turned the collar'105 travels along theworm screw 98,

and has a crank handle 104 whereby the carriage 106 is shifted laterally, i

thus resulting in a lateral shifting ofthe rear end of the hanger frame-75, becauseof the pivotal suspension of said frame at its for.

may be shifted laterally to any position by the crank 104'and the inclination and elevation ofsaid frame is controlled by the hand wheels 88. r

A flanged blade ring 107 is suspended from the hanger frame 75. The rearfportion of the ring is supported by hangers 108, depending from a transverse'bar 108', engaging under the-iange ofthe ring. rthe forward'end of the vring rests on a bracket 1091 depending from a cross member 1.09 (Fig-12). A spring pressed plunger 110, carried by the member 109', engages in openings 111 in the ring 107, to hold said ring against rotation.

through a wedge 112, said wedge' being supported by the cross member 109'... rlihe wedge ispivot-ally connected tothe forward end of a longitudinal rod 113. The rear end of the rod has a pivotal connection with a hand le- Bver 114 (Fig. 5). The lever is pivot/ed at 115 to the iside' of the upright channel bar 20. en the hand lever is pulled rearwardly, the wedge is slid rearwardly to disenga-.ge

hanger-frame 75.

just-ing shaft 122. The shaft 122 carries a bevel gear 123,(Fig. 6) at its rear end, and this gear `is engaged by another bevel gear 124, mounted on the shaft 126 of ahand wheel l 10 bar 20 and near its bottom, I mount a trans.- 125. The shaft 126 is mounted in one side of the elbow 13. A scraping blade 127 is suspended from the ring 107 by standards 128 and it is obvious that the blade may be swung to any desired angle by rotating the hand wheel 125. s

In Figures 13, 14 and 15, I have shown another'means for elevating and swinging the Instead of shafts 81, I provide a pair of worm shafts 129 which extend longitudinally on each side of the reach pipe 10. Each shaft has its forward end connected to a universal joint 132 which in turn is connected with a worm 132 journaled in a bracket 1'30secured to one side of a collar 131 fastened around the pipe 10. Each Zworm meshes with` and drives a segmental worm gear 133 lprovided with an extended hub 134. The gears and their hubs are journaled on a transverse shaft 135 which is fastened in brackets 136v extending upwardly from the collar 131, between the gears 133. f

Arms 137 extendforwardly and outwardfrom the outer ends of the hubs 134 of the 1y segmental gears 133, and have their forward 1'35`ward end. Itis noted that the hanger frame endsl connected by universels 138 to the hangers 78 of the frame 75. The rear end of each shaft 129 carries a bevel gear 139 which is engaged by another bevel gear 140 journaled on a shaft 126 mounted on one side l of the elbow 13. Each gear 140 is secured to Va hand wheel 88' also-iournaled on said shaft.

By revolving either hand wheel, the shaft 129. thereofis rotated, whereby the segment 133 is rocked and the corresponding end of the hanger-frame isxadjusted. For equalizing the raising and lowering of the frame,

'the coiled springsv 92 have their rearV ends secured to bars o: straps 141 pivote'd on the inner side 'of each center spoke of the seg- -5a To release vthe ring, a pin A110 is slidable mental gears 133.

Various "changes in the size and shape of the" diderent parts, as well as modification and alterations, may be made within the scope of the appended claims.

Having illustratedand described preferred forms of the invention, what I claim, is:

l. yIn aroad machine, reach, a front axle mounted in ground wheels, a support carried by the front aXle and sethe plunger 110 from the openings 111 in the cured to the front end of the reach, a surface a longitudinal -pi pey ring. After the ring is released, it may be' working tool carried by the reach, an elbow adjusted to any position by means of a pinion secured to the rear `end of the reach'. a sup- 116 (Figs. 1, 2'and 12) whichvmeshes with a pozt'rigidlysecured to the lower` end of the ring gear 117 on the underside of the ring. elbow, a rear axle connected wJth the sup` 'Ihepinion is mounted on a'shaft 118 carried port, rear ground wheels carrying ,thea-ear' axle, and a platform connected to the elbow y above the support and the rear axle.

2. In a road machine, a longitudinal pipe reach, a front axle mounted in ground wheels, a support carried by the front axle and secured to the front end of the reach, a surface `working tool carried by the reach, a rear- 1 reach, a front axle mounted in ground wheels,

a support carried by the `front axle and secured to the front end of the reach, transverse hangers carried by the reach, links adjustably carried by the hangers, a blade carrier connected with said links, ablade carried by said carrier, an upright connecting member secured to the rear end ofv the l,reach and extending downwardly, a pairof rigid supports extending rearwardly from the connecting member, a rear axle mounted on said supports, rear ground wheels supporting said axle, and a support for the operator above the pair of supports. i

4. In a road machine, an upright front support mounted on ground wheels, an elongated pipe member clamped to the front support, a blade hanger suspended from the pipe member, a connecting member secured tothe rear end ofthe pipe member for elevating the latter, a rigid support carried by the connecting member and extending rearwardly therefrom, a transverse rear axle adjustably connected with the support, means for shifting said rear axle, ground' wheels supporting said rear axle, and a platform above the rigid support. F

5. In a road machine,`an upright front support mounted on wheels, an elevated elongated pipe member secured to the front support, a hanger frame having its'forward end pivoted to the front support, a hanger mounted on the pipe member and adjustably supporting the rear end of the frame, an upright elbow having its upper end connected to the pipe member, a rear axle, rigid means extending forwardly from the rear axle to the lower end of the elbow, mea-ns for transversely shifting the rear axle. ground wheels supporting the rear axle, and a platform at the elbow.

6. In a road machine, a front axle, a front support carried by the axle and extending upwardly therefrom, front wheels supporting the axle, a single central longitudinal pipe reach having its front end fastened to the front support', an elbow secured to the rear end of the pipe reach, an arched support secured to the lowery end of the'elbow,

a brace extending from the upper to the lower portion of the elbow, supports extending rearwardly from the arched support, a rear axle slidably connected with said supports, and ground wheels supporting said rear axle.

7.. In a roadmachine, an elevated longitudinal pipe reach, a rear axle supported in ground wheels, means carried by the rear axle for supporting the elevated rear end of the pipe reach, a vfront axle mounted in ground wheels, a front support carried by the front axle and connected to the elevated front end of the pipe reach, means for tilting the front wheels, means for operating the tilting means including a lshaft extending upwardly of the front support, an elongated shaftjournaled in the pipe reach, gears connecting the elongated shaft and the upright shaft, and means at the rear end of the pipe reach connected with the elongated shaft for operating the same.

8. In a road machine, anl elevated longitudinal pipe reach, a rear axle supported in ground wheels, means vcarried by the rear axle for supporting the elevated rear end of the pipe reach, a front axle, frontwheels supporting said axle and arranged to tilt, a front support' carried by the front axle and connected to the front end of the"pipe reach, means mounted on the front axle and the front support for tilting the front wheels, an elongated shaft extending through the pipe reach and operably connected with'the tilting means'at its front end, and means for rotating said shaft mounted at the rear end of the pipe reach and connected with said wardly on the shafts and journaled thereon,

arms extending from and rigid with the hubs, a blade carrying frame under the reach pipe,

means for suspending the frame from the arms, brackets carried by the collar, .shafts supported by the brackets along each side of the pipe, and worms mounted on said shafts and engaging said gears.

10. In aroad machine, the combination of a Awheel supported pipe reach, a collar fastened around the reach, a pair of divergent 'l brackets extending from the collar, shafts extending Ilongitudinally of the -reaeh and having their front ends journaled in the ends of the brackets, hanger arms fastened on the front ends of said shafts, hangers havmg their upper ends pivoted to the outer aeraaaa ends of the arms,a blade `oarryimg 'ame suspended from the lower ends of the hangers, housings rigidly mounted on the rear end of the reach, Worm gears in the housings fastened on the shafts, and hand wheels having operating connection with said vvorm gears.

l1. ln a road machine, the combination ot a Wheel supported pipe reach, a collar fastened around the reach', a pair of divergent brackets extending from the collar, shafts extending longitudinally of the reach and having their front ends j ournaled in the ends of the brackets, hanger arms fastened on the front ends of said shafts, hangers having JAB/HES B. JARMIN. 

